Race Condition Affecting kernel-livepatch-5_3_18-150300_59_49-default package, versions <1-150300.7.3.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.75% (54th percentile)

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  • Snyk IDSNYK-SLES153-KERNELLIVEPATCH53181503005949DEFAULT-2644376
  • published14 Apr 2022
  • disclosed11 Feb 2022

Introduced: 11 Feb 2022

CVE-2021-44733  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 kernel-livepatch-5_3_18-150300_59_49-default to version 1-150300.7.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_3_18-150300_59_49-default package and not the kernel-livepatch-5_3_18-150300_59_49-default package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.

CVSS Base Scores

version 3.1